Process of producing beta-gamma-dimethylerythrene.



as sans Parana carton;

FRITZ HOFMANN, KONRAD DELBRll'GK, AND KURT MEISENBURG, 0F ELBERFELD, GERMANY, ASSIGNORS TO FARBENFABRIKEN VORM. FRIEDR. BAYER & 00., OF

ELBERFELD, GERMANY, A CORPORATION OF GERMANY.

PROCESS OF PRODUCING BETA-GAMMA-DIMETHYLERYTHRENEl No Drawing.

Patented Alligators.

To all whom it mayboncern: I

Be it known that we, FRITZ HOFMANN, KON- RAD DELBm'ic and KURT MEISENBURG, doctors of philosophy, chemists, citizens of the German Empire, residing at Elberfeld, Germany, have invented new and useful Improvements in Processes of Producing Beta- Gamma-Dimethylerythrene, of which the following is a specification.

Our invention concerns a new and valuable process which results in an excellent yield of the erythrene hydrocarbon betagamma-dimethylerythrene and which consists in distilling pinacone with a normal sulfate of an acid reaction.

The process proceeds according to the following equation:

besides pinacone hydrate and small quantities of pinacolin. The beta-gamma-dimethylerythrene isolated from the mixture boils at 68 to 69 C.

Other of the above mentioned salts may be used 6. 9. iron alum, chrome alum, copper sulfate, iron sulfate, aluminium sulfate, etc.

We claim 1. Process for producing an erythrene hydrocarbon which process comprises distilling a pinacone with a normal sulfate having an acid reaction.

2. Process for producing an erythrene hydrocarbon, which process comprises distilling a pinacone with alum.

3. Process for producing beta-gammadimethylerythrene, which process consists in first distilling pinacone with a normal sulfate of an acid reaction and then separating the beta-gamma-dimethylerythrene, substantially as described.

4. Process for producing beta-gammadimethylerythrene, which process consists in first distilling pinacone with alum and then separating the beta-gamma-dimethylerythrene, substantially as described.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

FRITZ HOFMANN, [L. s.]

KONRAD DELBRUGK. a s.]

KURT MEISENBURG. [1,. s.]

Witnesses:

HELEN NUFER,

A. Norm. 

